@FlytImagine, @RichardPM7 try doing a search for an extra folder called ‘z_airport-nzmf’ in your Community Folder as described above. If you have Orbx mesh installed, it also creates this folder. Removing it fixed this the duplicate airport that spawns you in the trees parallel to the new WU airport.
The snow you see with live weather around NZMF is due to meteoblue not having data for the Southern Alps area, so either gets given a blanket application of snow or falls back to snow tiles as it is classified as a mountainous area. This issue was present long before WU12 and isn’t just limited to the South Island of NZ!
See thread: Snow Cover or No Snow Cover